Impact of anastomotic orientation (Upward vs. Downward) in Roux-en-Y reconstruction on duodenal stump leakage incidence after radical total gastrectomy: a retrospective comparative study. - Gao, Zhenrong; Guo, Yan; Yue, Chao; Wang, Yannian; Li, Yanzhi; Mo, Zhenchang; Gao, Ruiqi; Zhang, Ying; Li, Xiaohua (BMC Cancer, 2025)